CN111070595A - Injection mold for removing threads of plastic part - Google Patents
Injection mold for removing threads of plastic part Download PDFInfo
- Publication number
- CN111070595A CN111070595A CN202010097037.6A CN202010097037A CN111070595A CN 111070595 A CN111070595 A CN 111070595A CN 202010097037 A CN202010097037 A CN 202010097037A CN 111070595 A CN111070595 A CN 111070595A
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- CN
- China
- Prior art keywords
- core
- plate
- gear
- plastic part
- transmission shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4435—Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2001/00—Articles provided with screw threads
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an injection mold for removing threads of a plastic part, which comprises an upper template, a lower template, a bearing plate, a piece pushing plate and a bottom plate which are sequentially arranged from top to bottom, wherein a cavity is formed between the upper template and the lower template; still including taking off screw-thread mechanism, it includes the core to take off screw-thread mechanism, the transmission shaft, horizontal push rod and lift ejector pad, the rotatable installation of core is on pushing away a board, the upper end of core is equipped with the external screw thread, the rotatable installation of transmission shaft is in pushing away a inboard, the lower extreme of transmission shaft is equipped with first gear, the upper end is equipped with the second gear, the core is equipped with the third gear with second gear engagement, horizontal push rod slidable sets up on the bottom plate, be equipped with on the horizontal push rod with first gear engagement's rack, the horizontal push rod top is equipped with first inclined plane, lift ejector pad bottom be equipped with first inclined plane matched with second inclined plane, connect through the connecting rod between lift ejector pad and the. The injection mold for removing the threads from the plastic part is reasonable in structure, the thread removing mechanism is reliable in operation, and the product yield is high.
Description
Technical Field
The invention relates to an injection mold for removing threads of a plastic part.
Background
The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. For demoulding of a plastic part with a threaded structure, at present, motorized mould opening is adopted, but the traditional motorized mould opening mould is complex in structure, poor in demoulding effect and high in product rejection rate.
Disclosure of Invention
The invention aims to provide an injection mold for removing threads from a plastic part, which is reasonable in structure, reliable in operation of a thread removing mechanism and high in product yield.
In order to achieve the aim, the technical scheme of the invention is to design an injection mold for stripping threads of a plastic part, which comprises an upper mold component, a lower mold component, a lateral core-pulling mechanism, a thread stripping mechanism and a positioning mechanism;
the upper die assembly comprises a panel and an upper die plate which are sequentially arranged from top to bottom, and an upper die core is arranged at the bottom of the upper die plate;
the lower die assembly comprises a bottom plate, a stripper plate, a bearing plate and a lower die plate which are sequentially arranged from bottom to top, and a lower die core is arranged at the top of the lower die plate;
the lateral core pulling mechanism comprises two core pulling slide blocks and two shovel bases which are in one-to-one correspondence with the two core pulling slide blocks, the two core pulling slide blocks are respectively arranged at the bottom of an upper die core in a sliding mode, the two core pulling slide blocks, the upper die core and a lower die core jointly enclose a cavity, the two shovel bases are fixed at the bottom of a panel, the two shovel bases respectively penetrate through an upper die plate, and each shovel base is used for driving the corresponding core pulling slide block to slide when the die is opened and closed;
the thread removing mechanism comprises a core, a transmission shaft, a horizontal push rod, a lifting push block, a connecting rod and an oil cylinder, the core is rotatably arranged on a push plate, the upper end of the core sequentially penetrates through a support plate, a lower template and a lower die core and extends into a die cavity, the outer wall of the upper end of the core is provided with an external thread which is used for forming an internal thread of a plastic part, the top of the lower die core is provided with a rotation stopping bulge positioned on the outer side of the core, the transmission shaft is rotatably arranged in the push plate, the lower end of the transmission shaft penetrates through the bottom of the push plate and is provided with a first gear, the upper end of the transmission shaft is provided with a second gear, the core is provided with a third gear meshed with the second gear, the horizontal push rod is slidably arranged at the top of the bottom plate, the side part of the horizontal push rod is provided with a rack meshed with the first gear, the lifting push block is arranged at the bottom of the push plate in a sliding manner, a second inclined plane matched with the first inclined plane is arranged at the bottom of the lifting push block, one end of the connecting rod is fixedly connected with the top of the lifting push block, the other end of the connecting rod penetrates through the bearing plate and is fixedly connected with the lower template, the oil cylinder is arranged at the side part of the bottom plate, and an output shaft of the oil cylinder is fixedly connected with one end of the horizontal push rod;
the positioning mechanism comprises a positioning column arranged on the supporting plate, the upper end of the positioning column penetrates through the lower template and extends to the upper part of the lower template, and a positioning hole for the positioning column to insert is formed in the upper template.
Preferably, one side of the core-pulling sliding block, which is far away from the cavity, is provided with a third inclined plane, and the shovel base is provided with a fourth inclined plane matched with the third inclined plane.
Preferably, the mold core and the transmission shaft are both sleeved with bearings.
Preferably, the face plate is provided with a sprue bush.
The invention has the beneficial effects that: the injection mold for removing the threads of the plastic part is reasonable in structure, reliable in operation of a thread removing mechanism and high in product yield.
The working principle of the invention is as follows: opening the mold after the injection molding of the mold is completed, opening the mold in the mold opening process, wherein a shovel base fixed on the panel acts on a core pulling slide block which slides towards a direction away from the plastic part, then opening the upper mold plate and the lower mold plate, and after the mold opening process is completed, an oil cylinder starts to drive a horizontal push rod to move, and a rack arranged on the horizontal push rod drives a first gear to rotate, so that a transmission shaft and a second gear rotate, and further a third gear and a mold core are driven to rotate; simultaneously, at horizontal push rod removal in-process, the lift ejector pad will be at the effect of horizontal push rod rebound, because through connecting rod fixed connection between lift ejector pad and the lower bolster, consequently the lift ejector pad will drive lower bolster and lower mould benevolence rebound, because set up on the lower mould benevolence again and stopped the commentaries on classics arch, consequently mould the piece will go upward and can not rotate along with the core under the promotion of lower mould benevolence to make and mould the external screw thread of piece screw-out core upper end gradually, accomplish to break away from until moulding the piece and the core, take out at last and mould the piece.
Drawings
Fig. 1 is a schematic view of the present invention in a clamped state.
FIG. 2 is a schematic view of the present invention in the mold-open state.
Fig. 3 is an enlarged view at a in fig. 1.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The technical scheme of the specific implementation of the invention is as follows:
as shown in fig. 1, 2 and 3, an injection mold for removing threads from a plastic part comprises an upper mold assembly, a lower mold assembly, a lateral core-pulling mechanism, a thread-removing mechanism and a positioning mechanism;
the upper die assembly comprises a panel 1 and an upper die plate 2 which are sequentially arranged from top to bottom, and an upper die core 3 is arranged at the bottom of the upper die plate 2;
the lower die assembly comprises a bottom plate 4, a stripper plate 5, a bearing plate 6 and a lower die plate 7 which are sequentially arranged from bottom to top, and a lower die core 8 is arranged at the top of the lower die plate 7;
the lateral core pulling mechanism comprises two core pulling slide blocks 9 and two shovel bases 10 which are in one-to-one correspondence with the two core pulling slide blocks 9, the two core pulling slide blocks 9 are respectively arranged at the bottom of an upper die core 8 in a sliding mode, the two core pulling slide blocks 9, the upper die core 3 and a lower die core 8 jointly enclose a cavity, the two shovel bases 10 are fixed at the bottom of a panel 1, the two shovel bases 10 respectively penetrate through an upper die plate 2, and each shovel base 10 is used for driving the corresponding core pulling slide block 9 to slide when the die is opened and closed;
the thread removing mechanism comprises a core 11, a transmission shaft 12, a horizontal push rod 13, a lifting push block 14, a connecting rod 15 and an oil cylinder 16, wherein the core 11 is rotatably installed on a push plate 5, the upper end of the core 11 sequentially penetrates through a support plate 6, a lower template 7 and a lower die core 8 and extends into a die cavity, the outer wall of the upper end of the core 11 is provided with an external thread which is used for forming an internal thread of a plastic part 17, the top of the lower die core 8 is provided with a rotation stopping bulge 18 positioned on the outer side of the core 11, the transmission shaft 12 is rotatably installed inside the push plate 5, the lower end of the transmission shaft 12 penetrates through the bottom of the push plate 5 and is provided with a first gear 19, the upper end of the transmission shaft 12 is provided with a second gear 20, the core 11 is provided with a third gear 21 meshed with the second gear 20, the horizontal push rod 13 is slidably arranged on the top of a bottom plate 4, the lateral part of the horizontal push rod 13 is provided, a first inclined plane 23 is arranged at the top of the horizontal push rod 13, the lifting push block 14 is slidably arranged at the bottom of the push plate 5, a second inclined plane matched with the first inclined plane 23 is arranged at the bottom of the lifting push block 14, one end of the connecting rod 15 is fixedly connected with the top of the lifting push block 14, the other end of the connecting rod 15 penetrates through the bearing plate 6 and is fixedly connected with the lower template 7, the oil cylinder 16 is arranged at the side part of the bottom plate 4, and an output shaft of the oil cylinder 16 is fixedly connected with one end of the horizontal push rod 13;
the positioning mechanism comprises positioning columns 24 arranged on the supporting plate 6, the upper ends of the positioning columns 24 penetrate through the lower template 7 and extend to the upper side of the lower template 7, and positioning holes 25 for the positioning columns 24 to insert are formed in the upper template 2.
And a third inclined plane is arranged on one side of the core-pulling slide block 9, which is far away from the cavity, and a fourth inclined plane matched with the third inclined plane is arranged on the shovel base 10.
The mold core 11 and the transmission shaft 12 are both sleeved with bearings.
The face plate 1 is provided with a sprue bush 26.
The invention has the beneficial effects that: the injection mold for removing the threads of the plastic part is reasonable in structure, reliable in operation of a thread removing mechanism and high in product yield.
The working principle of the invention is as follows: opening the mold after the injection molding of the mold is completed, in the mold opening process, opening the space between the panel 1 and the upper mold plate 2, enabling the shovel base 10 fixed on the panel 1 to act on the core-pulling slider 9, enabling the core-pulling slider 9 to slide towards the direction away from the plastic part 17, then opening the space between the upper mold plate 2 and the lower mold plate 7, enabling the oil cylinder 16 to drive the horizontal push rod 13 to move after the completion, and driving the first gear 19 to rotate by the rack 22 arranged on the horizontal push rod 13, so that the transmission shaft 12 and the second gear 20 rotate, and further driving the third gear 21 and the mold core 11 to rotate; meanwhile, in the moving process of the horizontal push rod 13, the lifting push block 14 moves upwards under the action of the horizontal push rod 13, and the lifting push block 14 is fixedly connected with the lower template 7 through the connecting rod 15, so that the lifting push block 14 drives the lower template 7 and the lower die core 8 to move upwards, and the rotation stopping protrusion 18 is arranged on the lower die core 8, so that the plastic part 17 moves upwards under the pushing of the lower die core 8 and cannot rotate along with the die core 11, the plastic part 17 is gradually screwed out of the external thread at the upper end of the die core 11 until the plastic part 17 is separated from the die core 11, and finally the plastic part 17 is taken out.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. An injection mold for removing threads from a plastic part is characterized by comprising an upper mold component, a lower mold component, a lateral core-pulling mechanism, a thread-removing mechanism and a positioning mechanism;
the upper die assembly comprises a panel and an upper die plate which are sequentially arranged from top to bottom, and an upper die core is arranged at the bottom of the upper die plate;
the lower die assembly comprises a bottom plate, a stripper plate, a bearing plate and a lower die plate which are sequentially arranged from bottom to top, and a lower die core is arranged at the top of the lower die plate;
the lateral core pulling mechanism comprises two core pulling slide blocks and two shovel bases which are in one-to-one correspondence with the two core pulling slide blocks, the two core pulling slide blocks are respectively arranged at the bottom of an upper die core in a sliding mode, the two core pulling slide blocks, the upper die core and a lower die core jointly enclose a cavity, the two shovel bases are fixed at the bottom of a panel, the two shovel bases respectively penetrate through an upper die plate, and each shovel base is used for driving the corresponding core pulling slide block to slide when the die is opened and closed;
the thread removing mechanism comprises a core, a transmission shaft, a horizontal push rod, a lifting push block, a connecting rod and an oil cylinder, the core is rotatably arranged on a push plate, the upper end of the core sequentially penetrates through a support plate, a lower template and a lower die core and extends into a die cavity, the outer wall of the upper end of the core is provided with an external thread which is used for forming an internal thread of a plastic part, the top of the lower die core is provided with a rotation stopping bulge positioned on the outer side of the core, the transmission shaft is rotatably arranged in the push plate, the lower end of the transmission shaft penetrates through the bottom of the push plate and is provided with a first gear, the upper end of the transmission shaft is provided with a second gear, the core is provided with a third gear meshed with the second gear, the horizontal push rod is slidably arranged at the top of the bottom plate, the side part of the horizontal push rod is provided with a rack meshed with the first gear, the lifting push block is arranged at the bottom of the push plate in a sliding manner, a second inclined plane matched with the first inclined plane is arranged at the bottom of the lifting push block, one end of the connecting rod is fixedly connected with the top of the lifting push block, the other end of the connecting rod penetrates through the bearing plate and is fixedly connected with the lower template, the oil cylinder is arranged at the side part of the bottom plate, and an output shaft of the oil cylinder is fixedly connected with one end of the horizontal push rod;
the positioning mechanism comprises a positioning column arranged on the supporting plate, the upper end of the positioning column penetrates through the lower template and extends to the upper part of the lower template, and a positioning hole for the positioning column to insert is formed in the upper template.
2. An injection mold for plastic part thread removal according to claim 1, wherein a third inclined surface is provided on a side of the core-pulling slider away from the cavity, and the shovel base is provided with a fourth inclined surface matched with the third inclined surface.
3. An injection mold for plastic part thread removal as claimed in claim 2, wherein bearings are sleeved on both the core and the transmission shaft.
4. An injection mold for plastic part unscrewing as claimed in claim 3, wherein the face plate is fitted with a sprue bush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010097037.6A CN111070595A (en) | 2020-02-18 | 2020-02-18 | Injection mold for removing threads of plastic part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010097037.6A CN111070595A (en) | 2020-02-18 | 2020-02-18 | Injection mold for removing threads of plastic part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111070595A true CN111070595A (en) | 2020-04-28 |
Family
ID=70324377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010097037.6A Pending CN111070595A (en) | 2020-02-18 | 2020-02-18 | Injection mold for removing threads of plastic part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111070595A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114619638A (en) * | 2022-03-10 | 2022-06-14 | 深圳市众为精密科技有限公司 | 5G mobile phone precision structural part based on composite core-pulling mechanism inner wall demoulding |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6599115B2 (en) * | 2001-05-07 | 2003-07-29 | Precise Technology, Inc. | Mold unscrewing mechanism for making threaded articles |
| JP2008012873A (en) * | 2006-07-10 | 2008-01-24 | Fujinon Sano Kk | Mold assembly for injection molding |
| KR20090056582A (en) * | 2007-11-30 | 2009-06-03 | 씨제이제일제당 (주) | An apparatus for injection molding of cap of container for liquid food and a method using the same |
| CN102601933A (en) * | 2012-02-26 | 2012-07-25 | 宁波思迈工业科技有限公司 | Threaded core pulling device with automatically reset thread starting point |
| CN204773381U (en) * | 2015-06-29 | 2015-11-18 | 苏州威凯精密模具有限公司 | Car glass switch injection molding mould |
| CN205075258U (en) * | 2015-10-08 | 2016-03-09 | 东莞诚信电子塑胶有限公司 | Automobile engine belt pulley forming device |
| CN107042618A (en) * | 2017-05-27 | 2017-08-15 | 张家港市天江精密模具制造有限公司 | A kind of injection mold of deep thread bottle cap |
| CN109435179A (en) * | 2018-12-17 | 2019-03-08 | 昆山准达热流道有限公司 | Threaded cap shaping mould |
| CN110216841A (en) * | 2018-03-04 | 2019-09-10 | 李光伟 | A kind of rack drives Leave out thread execution injection mold synchronous with ejection |
| CN209987324U (en) * | 2019-04-10 | 2020-01-24 | 厦门健升塑胶模具有限公司 | Slider thread-removing injection mold |
-
2020
- 2020-02-18 CN CN202010097037.6A patent/CN111070595A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6599115B2 (en) * | 2001-05-07 | 2003-07-29 | Precise Technology, Inc. | Mold unscrewing mechanism for making threaded articles |
| JP2008012873A (en) * | 2006-07-10 | 2008-01-24 | Fujinon Sano Kk | Mold assembly for injection molding |
| KR20090056582A (en) * | 2007-11-30 | 2009-06-03 | 씨제이제일제당 (주) | An apparatus for injection molding of cap of container for liquid food and a method using the same |
| CN102601933A (en) * | 2012-02-26 | 2012-07-25 | 宁波思迈工业科技有限公司 | Threaded core pulling device with automatically reset thread starting point |
| CN204773381U (en) * | 2015-06-29 | 2015-11-18 | 苏州威凯精密模具有限公司 | Car glass switch injection molding mould |
| CN205075258U (en) * | 2015-10-08 | 2016-03-09 | 东莞诚信电子塑胶有限公司 | Automobile engine belt pulley forming device |
| CN107042618A (en) * | 2017-05-27 | 2017-08-15 | 张家港市天江精密模具制造有限公司 | A kind of injection mold of deep thread bottle cap |
| CN110216841A (en) * | 2018-03-04 | 2019-09-10 | 李光伟 | A kind of rack drives Leave out thread execution injection mold synchronous with ejection |
| CN109435179A (en) * | 2018-12-17 | 2019-03-08 | 昆山准达热流道有限公司 | Threaded cap shaping mould |
| CN209987324U (en) * | 2019-04-10 | 2020-01-24 | 厦门健升塑胶模具有限公司 | Slider thread-removing injection mold |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114619638A (en) * | 2022-03-10 | 2022-06-14 | 深圳市众为精密科技有限公司 | 5G mobile phone precision structural part based on composite core-pulling mechanism inner wall demoulding |
| CN114619638B (en) * | 2022-03-10 | 2024-03-26 | 深圳市众为精密科技有限公司 | 5G mobile phone precise structural member based on inner wall demolding of composite core-pulling mechanism |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200428 |
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| RJ01 | Rejection of invention patent application after publication |